/* Global Styles */
:root {
    --primary-color: #2E7D32;
    --primary-hover: #1B5E20;
    --secondary-color: #e8f5e9;
    --accent-color: #D50000;
    --text-color: #212121;
    --light-text: #757575;
    --danger-color: #C62828;
    --success-color: #2E7D32;
    --warning-color: #FF8F00;
    --border-color: #EEEEEE;
    --box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Poppins', 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.8;
    color: var(--text-color);
    background-color: #FAFAFA;
    margin: 0;
    padding: 0;
    letter-spacing: 0.01em;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.header {
    background-color: white;
    box-shadow: var(--box-shadow);
    padding: 18px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    width: 160px;
    height: auto;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.site-title {
    font-size: 1.7rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
    padding: 0;
    letter-spacing: -0.5px;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    letter-spacing: 0.3px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-control {
    display: block;
    width: 100%;
    padding: 10px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(76, 175, 80, 0.25);
}

.form-check {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.form-check-input {
    margin-right: 10px;
}

/* Alert Styles */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(40, 167, 69, 0.2);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(220, 53, 69, 0.2);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(255, 193, 7, 0.2);
}

/* Card Styles */
.card {
    background-color: white;
    border-radius: 12px;
    box-shadow: var(--box-shadow);
    margin-bottom: 30px;
    overflow: hidden;
    border: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
}

.card-header {
    background-color: var(--secondary-color);
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

.card-body {
    padding: 25px;
}

.card-title {
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
    position: relative;
}

.card-title:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
}

/* Icon Circle */
.icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.card:hover .icon-circle {
    transform: scale(1.1);
    background-color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.card:hover .icon-circle i {
    color: white !important;
}

/* Test Styles */
.question-card {
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.question-header {
    background-color: var(--primary-color);
    color: white;
    padding: 15px 20px;
}

.question-body {
    padding: 20px;
}

.options-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.option-item {
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.option-item:hover {
    background-color: rgba(76, 175, 80, 0.05);
    border-color: var(--primary-color);
}

.option-item.selected {
    background-color: rgba(76, 175, 80, 0.1);
    border-color: var(--primary-color);
}

.option-item.correct {
    background-color: rgba(40, 167, 69, 0.1);
    border-color: var(--success-color);
}

.option-item.incorrect {
    background-color: rgba(220, 53, 69, 0.1);
    border-color: var(--danger-color);
}

.test-controls {
    margin-top: 30px;
    display: flex;
    justify-content: space-between;
}

.progress-container {
    margin-bottom: 20px;
}

.progress-bar {
    height: 8px;
    background-color: var(--secondary-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--primary-color);
    width: 0;
    transition: width 0.3s ease;
}

/* Results Styles */
.result-summary {
    text-align: center;
    margin-bottom: 30px;
    padding: 30px;
    background-color: var(--secondary-color);
    border-radius: 8px;
}

.result-score {
    font-size: 4rem;
    font-weight: bold;
    color: var(--primary-color);
    margin: 0;
    line-height: 1.2;
}

.result-status {
    font-size: 1.5rem;
    margin: 10px 0;
}

.result-status.passed {
    color: var(--success-color);
}

.result-status.failed {
    color: var(--danger-color);
}

.result-recommendation {
    font-size: 1.2rem;
    margin-top: 20px;
    padding: 15px;
    background-color: rgba(76, 175, 80, 0.05);
    border-left: 4px solid var(--primary-color);
}

.answer-list {
    margin-top: 30px;
}

.answer-item {
    margin-bottom: 20px;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.answer-question {
    font-weight: bold;
    margin-bottom: 10px;
}

.answer-chosen {
    margin-bottom: 5px;
}

.answer-correct {
    color: var(--success-color);
}

.answer-incorrect {
    color: var(--danger-color);
}

/* CEFR Description Styles */
.cefr-section {
    margin-top: 40px;
    padding: 20px;
    background-color: var(--secondary-color);
    border-radius: 8px;
}

.cefr-title {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

.cefr-skill {
    margin-bottom: 20px;
}

.cefr-skill-title {
    font-weight: bold;
    color: var(--primary-color);
}

/* Admin Dashboard Styles */
.admin-header {
    background-color: var(--primary-color);
    color: white;
    padding: 20px;
    margin-bottom: 30px;
}

.admin-section {
    margin-bottom: 40px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.admin-table th {
    background-color: var(--secondary-color);
    font-weight: bold;
}

.admin-table tr:hover {
    background-color: rgba(76, 175, 80, 0.05);
}

/* Responsive Styles */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .site-title {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 8px 16px;
    }
    
    .card-header, 
    .card-body {
        padding: 15px;
    }
    
    .result-score {
        font-size: 3rem;
    }
    
    .result-status {
        font-size: 1.2rem;
    }
    
    .admin-table th,
    .admin-table td {
        padding: 8px 10px;
    }
}

@media (max-width: 576px) {
    .test-controls {
        flex-direction: column;
    }
    
    .test-controls .btn {
        margin-bottom: 10px;
    }
}